Visa U.S. marketshare (MS/GDV) expanded among the nation’s four major payment card networks. The major four networks produced $1754 billion in U.S. gross dollar volume (GDV) in the third quarter (3Q/18) for a 9.8% year-on-year (YOY) gain, compared to 9.3% YOY in the prior quarter, according to CardData. Visa continues to rule the market, growing…